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1、InternationalJournalofControl,Automation,andSystems(2010)8(2):425-432http://www.springer.com/12555DOI10.1007/s12555-010-0230-8NewDirectTorqueNeuro-FuzzyControlBasedSVM-ThreeLevelInverter-FedInductionMotorToufoutiRiad,BenallaHocine,andMezianeSalimaAbs
2、tract:Inthispaper,anoveldirecttorqueneuro-fuzzycontrol(DTCNF)schemecombiningwithspacevoltagemodulation(SVM)techniqueofathreelevelsinverterispresented.Usingneuro-fuzzytechnique,thereferencespacevoltagevectorcanbeobtaineddynamicallyintermsoftorqueerror
3、,sta-torfluxerrorandtheangleofstatorflux.Comparedwithconventionaldirecttorquecontrol(C_DTC),inthisnewtechnique,theripplesofbothtorqueandfluxarereducedremarkable,andswitchingfre-quencyismaintainedconstant.Simulationresultsverifythevalidityofthepropose
4、dmethod.Keywords:Directtorquecontrol,inductionmotor,neuro-fuzzy,spacevectormodulation,statorflux,threelevelinverter.1.INTRODUCTIONsystemstakearemarkableplace,in[16,17]aNFCisusedforaDTCdrive.Later,in[14,18]thesamesystemInrecentyears,theindustrialappli
5、cationsofthefieldwasimplementedwithexcellentresults;howeverorientedcontrol(FOC)inductionmotordriveshaveadditionalcalculationswereneededtoreachzero-steady-greatlyincreased,includingsteelandpapermachines,stateerror.machinetools,andsoon[4].Inparallel,se
6、veralInthispaper,anoveldirecttorqueneuro-fuzzycontrolresearcheshasbeendevotedtofindoutdifferent(DTCNF)schemecombiningwithspacevoltagesolutionsforthecontroloftheIMdrivesforreductionofmodulation(SVM)techniqueofathreelevelsinverteristhecomplexityoftheal
7、gorithmsinvolvedinafieldpresented.Thisschemeusesacontrollerbasedonanorientedcontrol,andtodeveloprobustcontrolstrategies.adaptiveNFinferencesystem(ANFIS)toreplacetheSinceitsintroductionin1985,thedirecttorquecontrolswitchingtableandthehysteresiscompara
8、tors[14,18].(DTC)[1]principlewaswidelyusedforIMdriveswithTheANFISevaluatethereferencevoltagerequiredtofastdynamics.ThemainadvantagesofDTCareabsencedrivethefluxandtorquetothedemandedvalueswithinofcoordinatetransformationandcurrentregulatorafixedtimepe